In mathematical physics, the WKB approximation or WKB method is a method for finding approximate solutions to linear differential equations with spatially...
39 KB (6,879 words) - 05:37, 3 November 2024
In physics, the supersymmetric WKB (SWKB) approximation is an extension of the WKB approximation that uses principles from supersymmetric quantum mechanics...
2 KB (321 words) - 04:24, 12 February 2024
Transmission coefficient (section WKB approximation)
sample calculations, see rectangular potential barrier. Using the WKB approximation, one can obtain a tunnelling coefficient that looks like T = exp ...
8 KB (1,230 words) - 13:47, 26 September 2024
Quantum tunnelling (section WKB approximation)
offer approximate solutions that are easier to compute, such as the WKB approximation. The Schrödinger equation was published in 1926. The first person...
51 KB (6,474 words) - 18:18, 23 October 2024
in the eikonal approximation in quantum mechanics are very closely related to the WKB approximation for one-dimensional waves. The WKB method, like the...
4 KB (608 words) - 14:50, 13 February 2024
Instanton (section WKB approximation)
semi-classical approximation of the path-integral formulation in Euclidean time. We will first see this by using the WKB approximation that approximately...
39 KB (6,383 words) - 12:59, 4 October 2024
The WKB approximation is a method for solving equations in applied mathematics. WKB may also refer to: Warracknabeal Airport (IATA: WKB), in Warracknabeal...
334 bytes (76 words) - 23:34, 24 February 2023
Method of steepest descent (redirect from Saddle point approximation)
applications of the stationary phase method to the multidimensional WKB approximation in quantum mechanics (as well as in optics), Ind is related to the...
31 KB (5,057 words) - 12:20, 17 April 2024
Ernest Langer, is a correction to the WKB approximation for problems with radial symmetry. When applying WKB approximation method to the radial Schrödinger...
4 KB (611 words) - 07:44, 10 August 2023
usual conditions required for the SVEA validity. Ultrashort pulse WKB approximation Arecchi, F.; Bonifacio, R. (1965). "Theory of optical maser amplifiers"...
7 KB (1,019 words) - 13:14, 11 January 2024
Classical limit (redirect from Slow-motion approximation)
Often, this is approached through "quasi-classical" techniques (cf. WKB approximation). More rigorously, the mathematical operation involved in classical...
12 KB (1,507 words) - 23:47, 23 May 2024
developed what is known as the Wentzel–Kramers–Brillouin approximation, also known as the WKB method, classical approach, and phase integral method. In...
15 KB (1,417 words) - 21:42, 1 September 2024
of these include the method of matched asymptotic expansions and WKB approximation for spatial problems, and in time, the Poincaré–Lindstedt method,...
11 KB (1,779 words) - 20:02, 14 January 2024
solutions are obtained using techniques like variational methods and WKB approximation. It is also common to treat a problem of interest as a small modification...
74 KB (10,234 words) - 05:42, 8 November 2024
tunneling models using the Wentzel-Kramers Brillouin (WKB) approximation are useful. In the WKB theory, the tunneling current is predicted to be where...
26 KB (3,641 words) - 21:28, 29 June 2024
coefficients singlet state and triplet state adiabatic approximation Born–Oppenheimer approximation WKB approximation time-dependent perturbation theory time-independent...
17 KB (2,522 words) - 04:34, 21 July 2023
regions of space where the WKB approximation to the atomic wave-function breaks down. In accordance with this approximation the wavelength of the gross...
19 KB (2,567 words) - 23:19, 1 May 2024
density can be expressed, for a triangular shaped barrier (considering WKB approximation) as:[citation needed] J T n , p = q 3 E 2 16 π 2 ℏ Φ B n , p e − 4...
16 KB (2,096 words) - 08:31, 3 October 2024
solve quantum mechanical problems, providing useful extensions to the WKB approximation, and statistical mechanics. Understanding the consequences of supersymmetry...
17 KB (3,113 words) - 20:03, 12 October 2024
Taylor expansions for the moments of functions of random variables (category Statistical approximations)
\Sigma _{X}} is the covariance matrix of X. Propagation of uncertainty WKB approximation Delta method Haym Benaroya, Seon Mi Han, and Mark Nagurka. Probability...
8 KB (1,726 words) - 10:52, 7 October 2024
systems, one usually turns to other approximation schemes, such as the variational method and the WKB approximation. This is because there is no analogue...
70 KB (15,969 words) - 10:32, 26 October 2024
electromagnetism are neglected entirely. Less extreme approximations include, the WKB approximation, physical optics, the geometric theory of diffraction...
1 KB (115 words) - 22:05, 17 July 2022
likes a meson. SUSY concepts have provided useful extensions to the WKB approximation. Additionally, SUSY has been applied to disorder averaged systems...
68 KB (7,532 words) - 15:26, 2 November 2024
the action of the trajectory through a potential barrier. Using the WKB approximation, the tunneling rate (Γ) can be determined to be of the form Γ = A...
86 KB (14,267 words) - 21:56, 22 September 2024
behaviour is well-studied for smoothly varying potentials in the WKB approximation for wavefunction, where an oscillatory behaviour is observed if the...
19 KB (2,309 words) - 23:49, 4 November 2024
the Schrödinger equation by using the Wentzel-Kramers-Brillouin (WKB) approximation, and Wigner-Seitz (WS) spheres. Their model is heavily simplified...
24 KB (3,011 words) - 14:02, 29 October 2024
concept of semiclassical physics, beginning with the development of WKB approximation used in descriptions of quantum tunneling for example.: 231 While...
17 KB (2,117 words) - 19:12, 23 October 2024
Perturbation Theory Chapter 8: The Variational Principle Chapter 9: The WKB Approximation Chapter 10: Scattering Chapter 11: Quantum Dynamics Chapter 12: Afterword...
6 KB (525 words) - 00:50, 28 October 2024
are determined by a set of boundary conditions. According to the WKB approximation, the probability for a particle to tunnel is inversely proportional...
4 KB (564 words) - 18:08, 27 April 2024
canal (resulting in what is known as Green's law) anticipates the WKB approximation of quantum mechanics, while his research on light-waves and the properties...
24 KB (2,768 words) - 15:37, 7 August 2024